Does anyone know how to change the spindle feed v-belt, what the belt size is, and where I can get one? It comes right off of the back pulley but it looks like the front shaft and pulley have to come off.

Thanks

Do you mean the "quill down feed belt" ( the little itty bitty belt on the left side, under the swing out cover? If yes I will give you a quick step by step and the belt # ( several suppliers)..

Adobe (old as dirt)

Yes - that's the one.

Thanks

Belt Number 3L-150 ( common small appliance belt)

You must lift the head off the ram a little less than the thickness of the belt.
loosen the two mount bolts to the end of the studs ( one in front, one in the rear)

Make sure the spindle is all the way " up"

Pull the Head assembly up only as far as you need to push the belt over the front pully ( I use an engine hoist with soft straps )Don"t pry, that is cast Alum.

Lower the head and tighten the nuts, approx 20 ft lbs, no more or you can distort the alum.

You then have to push the top half ( spring loaded) of the rear drive pully up to install the belt.

Do not lift the head any more than you must ( I just stuff the belt in ) if you go too far, you have to remove a lot more to reload some of the spindle drive.
That is PITA twice.

Call 3S at 414-570-9530 for a parts catalouge. Nice people, former Tree employees that bought all of the Tree repair parts when Tree shut down, they also do spindle repair. The parts breakdown will help with any repair issues, and they are very fair on prices.

Hope this help

Adobe (old as dirt)

Hi guys,
Just a footnote to what Adobe has said. We've been there done that many times and one tip that may be of interest is - to do what you want, you don't need a hoist or any other thing to get the varidrive/gear housing up off the quill housing enough to change the belt - simply loosen the nuts as Adobe said then use the quill to push the upper unit up. Push it up and lock the quill lock to hold it there. This works on all of our machines, possibly later machines may be different.
Hope this can be of help
Best regards,
Gary

How neat ! Never thought of that..that is much easier than straping up and raising with a engine hoist..Kinda feel bad also, as I converted my Tree to a 3 axis CNC ( all with ball screws ) and have a couple of new belts that I will never use..So if any member wants one, its free..will need like 6 a pack ( Bud only ) for USPO , just E mail and I will send. Glad you guys suggested the procedure..But jimbo, you should still get the parts manual from 3 S, it will help in future repairs..

Adobe (old as dirt )




Adobe (old as dirt )

I can't believe the quit response - THANKS. I'll try it as soon as I get a belt and let you know the results.

Using the info that you guys provided, I was able to change the belt in a matter of minutes - Thanks!

courious.. did you get the belt I sent ?

Adobe (old as dirt )

anyone know how to change the main drive belt on a 310?